Automatic spark-arrester



A. D. JONES.

AUTOMATIC SPARK ARRESTER.

APPLICATION FILED JAN-23.1920.

1,355,761. Patented 00u.12,1920.

2 SHEETSSHEET I.

,lN V PINTO A lllel'l D. tT072195;

A. D. JONES.

AUTOMATIC SPARK ARRESTER. APPLICATION FILED mus. 1920.

1,355,761. Patented Oct. 12,1920.

2 SHEETSSHEET 2.

, [NV PINTO R A lbert D. fines 4L. 5 aw T To aZZ whom it may concern:

UNITED STATES PATENT OFFICE.

ALBERT I). JONES, 0F QUINCY, CALIFORNIA.

AUTOMATIC sPA mARaEsTEn.

is it known that I, ALBERT D. ONES, a citizen of the United States,residing at Quincy, in the county of Plumas and State of'California,have invented new and useful Improvements in Automatic Spark Arresters,of which the following is a specific'ation.

This invention relates to spark arresters.

The different types of spark arresters known and used have been suchthat it required manual means for lowering or raising the spark arresterin order to give a proper draft to the engine in case the same had not Hbeen runn ng and it was desired to bring up the steam. In this mannermany times the spark arrester was left in its off position after thesteam had been brought up and the engine started, thus permitting-largesparks to fly from the stack and causing fires. Also, in the differenttypes of spark arresters heretofore known and used, the screen membersdisposed over the stack have usually been vof such a mesh that largeenough sparks could be forced therethrough which would hold their fireuntil they reached the earth. andthus causing damage. This is true fromthe-fact that in case smaller mesh wire for the'screen members was used,the screens would become clogged and would often have to be cleanedbefore they could properly perform their intended function. V I r It isan object of this invention to provide a sparkarrester utilizing-twoscreen members'disp'osed over the topof the stack and arranged tobebrought to an open or closed position, the open positionrepresentingthat the screens are not disposed over the outlet of thestack and the closed position representing the disposal of the screenmembers over the outlet of the stack; and also to bring about thisoperation automatically with the starting and shutting down of theengine, respectively. 7 i It is also an object of the invention to"provide a spark arrester as above character. ized in which the largersparks as they ascend the stack are thrown against the lower screenmember and then if of too large a size are thrown therefrom to travel ina circuitous path at theend of which they will be again thrown againstthis lower screen member and so continued until these I sparks becomefine enough to pass through Specification of Letters Patent;

, the said member, after which they a e broken again through a finerinesh screen member and then to the atmosphere. In this way any largespark has been pulverized before it reaches the atmosphere and thereforeno danger of fire from'the same is'presented. T

It is the general object of the invention to I I provide such a deviceas above characterized 'which will be lnexpenslve to manufacture andsimple in its construction. With the Patented Oct. 12, 1920.-

Application filed January 23, 1920. Serial No. 353,495. v i i above andother objects in view the invention consists of the novel features ofconstruction, combination and arrangement of 7 parts as illustrated inthe drawings, of which; v

Figure l is a side elevation.

Fig. 2 is a vertical central sectional view 'taken at right angles toFig. 1.

Fig.3 is a vertical central sectional view taken at rightangles to Fig.2and showing the open position of thescreen members. I

Fig. 4 is a view similar to Fig. 3 and showing the closed position ofthe screen members.

Referring. to the drawings in detail, 10, indicates the usual breeching,11 the stack, 'and 12 a stub stack or in this instance," the casing forthe spark 'arr'ester. The upper end "of the stub stack' l2 isfiangedinwardly and downwardly forming'the lipv 13, and its lower end isreduced as at'l l, the reduced end being adapted to slide over the 18..One end of the shaft is extended as indicated at 19, the purpose ofwhich will later appear; Centrally of this shaft is mounted-a crankmember 20 having the radially vdisposedv arms 21 and 22. Near the upperend ofthe m'ain stack I provide a cross member 23 having an enlargedmiddle portion as indicatedfat 24. A rod 2 5 is mounted centrally of themain stack and stub, stack and its lower ,end'adapted to like member thecentral portion of said v .90 maln stack 11 and be secured thereto asinr dica'ted by the rivets 1-5. Centrally of the main stack is mountedthe transverse shaft 16, the same being secured against longitu 'dinalmovement'by the washers 17 and pins rib member being enlarged and anopening provided therein as indicated at 30. The ends of the rib member29 are extended to form the pin-like members 31 said pin members actingas guides and adapted to slide within theopenings provided in the lip13. The screen member has a trans: verse member. 32 extending betweenthe inner sides of its rim and has an enlarged middle portion asindicated at 33 in which an opening is provided to accommodate the rod25. The upper end of the rod is threaded and a sleeve member 34ispositioned between the rib 29 and the cross member 32 and by the use ofnuts indicated at 35, the screen member 27 is securely held. A second,screen member 36 is provided having a larger mesh than the member-27.

This member 36 is in the shape of an'inverted cone and comprises the rimmember 37 and the collar-like member 38, the collar being freelyslidable upon therod 25. On

the lower end-of the ,rod'25 there is journaled the upper end of a link39, the lower end of said link being journaled in the arm 22 of the armmember 20. Thecollar 138 .of the screen member 36 is provided with lugsin which the upper .end of a link member 40 is journaled as indicated at41, the

lower end of said link-member being journaled in the other radial arm 21of the arm member 20.

As has before been stated, the large stub stack 12 is adapted to slidedown over the main stack 11 and thus as shown in Figs. 2, 3.'and 4,there is provided a chamberbetween the exterior walls of the main stackandrthe enlarged portion of the stub stack, Circumferentially of themain stack there is provided a series of ports as indicated at 40', thesame being struck in the main stack jiand forming the aprons asindicated at 41.

The purpose of "this chamber between the main stack and the enlar edportion of the stub stack andalso the communication'from this chamber tothe interior of main'stack is that whenla-rgesparkslof such dimensionsthat will not pass through the screen member 36, they will be madeto'travel' the cir cuitouspath as indicatedbythe arrows 42 of Fig. 4 andin this'manner'gradually put verize themselvesso that they may freely'pass through the'screen 36,,after which by continuously being impelled.against the finer mesh screen 27'they are further pulvorized untilpractically a dust when they pass therethrough andare given up to theatmosphere.

On the extended end of the shaft 16 there is secured a pulley 42 and onthe breeching 10 there is suitably mounted a vertical {casing orcylinder 43. In the cylinder 43 there is provided a plunger or piston 44carryingv a piston head 45 and the upperend thereof ing therefromv arethe p'ipes 53 and 54.

secured to a cable or rope as at 46, the oppo. site end of said cablebeing secured to the one end of a coil spring 47 and the opposite end ofsaid coil spring being in turn 'secured to the cylinder or casing 43 asat 48.

In the bottom of the cylinder 43 there is 7 Either the pipes 53 or,54may be connected to the steam pipe of the engine and preferably belowthe throttle. 'The other (pipe may be connected to the blower of theengine and by either of these means the piston may be operated'to rotatethe shaft 16, a crank 56 is formed on the pulley 42 and to this crankmay be attached a rope orwire extending to and within reach of theengineer whereby the shaft 16'maybe rotated to hold the screen membersin their closed position or opened position as may be desired. I v v Inthe operation of this device assuming that the pipe 53 is connectedbelow the throt;

tle itwould then be, seen that whenever the engine was started thepiston 44 would be shoved downwardly against the tension of, the spring47 and the shaft -16tur1ied which would. raise the screen member 35 andlower the screen member 27, or, in other words, bring them to theirclosed position as shown in Fig. 4. When the'steam was shut off or theengine shut down the tension of the spring 47 would rotate the shaft.

in the opposite direction and againbring.

the screen memberstotheir open position as. shown in Fig. 3. It alsocanbe here noted that in case one of the pipe's 53 0i 54 were connectedto the blower of an'e'ngine the same operation could behad.

ltis also here to be noted that in case it is desired to retain thescreen members in, their closed position continuously by means of therope connected ,to the crank 56 on the pulley 52, the shaft can be tiedin the desired position for holding the screens closed;

This crankmember '56 can also be utilized in case the screen members.become clogged with the ashes from the sparks or soot,b'y

engines or the like where wood is principally used for fuel, it is to beunderstood, how- I: simply closing and opening the screen memany otheren ine using like fuel.

iVhile I haveshown the preferred form of my invention as now known tomelt wlllbe understood that various changes in the combination,construction and arrangement of parts may be-made by those'skilledin theart without departing from the spirit of the invention as claimed."

Having thus described my invention, what I claim and desire to secure byLetters Patent, is: i

1. In aispark arrester'including a main stack, a'stub stack securedthereto, having an inturned lip, a rod mounted centrally of said stubstack, a pair of screens mounted on said rod, one exteriorly and theother interiorly of said stub stack, said internal screen being adaptedto seat upon the inner IlIIl of'said inturned lip and said exteriorscreen adapted to. seat on the exterior rim thereof,

a shaft and connecting means whereby with the turningof said shaft inone direction the screens will be moved away from said lip and theturning of said shaft in the opposite direction will cause the screensto seat upon said lip.

2. In a spark arrester including a main stack, a stub stack securedthereto, having an inturned lip, a rod mounted centrally of said stubstack, a pair of screens mounted on said rod, one exteriorly and theother interiorly of said stub stack, said internal screen being adaptedto seat upon the inner rim of said inturned lip and said exterior screenadapted to seat on the exterior rim thereof, a shaft and connectingmeans whereby with the turning of said shaft in one direction thescreens will be moved away from said lip and the turning of said shaftin the opposite direction will cause the screens to seatupon said lip,and means for rotating said shaft, said means being controllable from aremote point.

3. In a spark arrester including a main stack, a stub stack securedthereto, a rod mounted centrally of'said stub stack, a pair of screenmembers mounted on said rod, one exteriorly and the other interiorly ofthe outlet of said stub stack, a shaft, and con-- necting means wherebywith turning or rocking movement of said shaft in one direction thescreen members will be moved in opposite directions in respect to eachother.

4. In a spark arrester including a main stack, a stub stack securedthereto, a rod mounted centrally of said stub stack, a pair of screenmembers mounted on said rod, one exteriorly and the other interiorly ofthe outlet of said stub stack, a shaft, connecting means whereby withturning or rocking movement of said shaft in one direction, the screenmembers will be moved in opposite directions with respect to each other,means for normally holding said shaft for retaining the screen membersin their last mentioned positions andmeans for rotating said shaft tomove the screens toward each. other.

5. In combination, a main stack, an en larged stub stack having areduced end and secured thereto, a chamber being formed between theenlarged portion of the stub stack and the exterior wall of the mainstack, said chamber communicating with the interior of the main stackthrough a plurality of passsages provided therein, and a pair of screenmembers disposed one exteriorly and one interiorly of said stub stackand the interior screen being of larger mesh than the exter1or screen. 7

6. In combination, a main stack and a. large stub stack having aninturned 11p on its upper end, and at its lower end reduced and adaptedto telescope over the main stack whereby a chamber is formed betweentheexterior wall of the main stack and the enlarged portion of the stubstack and a series of circumferential ,ports leading through the wall ofsaid main stack from said cham-V said rod adapted to seat on the innerrim l of said lip of the stub stack, and a second screen member securedon the upper end of sald slidable rod and adapted to seat on the upperedge of said lip, a transverse shaft mounted in said main stack andconnecting means between said shaft and said slidable screen and rod,whereby with the movement of said shaft the screen members may besimultaneously seated or brought to their closed position.

7. In combination, a main stack and a large stub stack having aninturned lip on its upper end, andat its lower end reduced and adaptedto telescope over the main stack whereby a chamber is formed between theexterior wall of the main stack and the enlarged portion of the stubstack and a series of circumferential ports leading through the wall ofsaid main stack from said chamber, a rod centrally and slidably mountedin said stack and extending from said stub stack, a screen memberslidably mounted on said rod adapted to seat on the inner rim of saidlip of the stub stack, and a second screen member secured on the upperend of said slidable rod and adapted to'seat on the upper edge of saidlip, a transverse shaft mounted in said main stack and connecting meansbetween said shaft and said slidable screen and rod, whereby with themovement of said shaft the screen members may be simultaneously seatedor brought to their closed position, and means connected to said shaftfor holding said screen members in their open position.

adapted to slip over the main stack and be i 8. In aspark ar'resterincluding a stack, a transverse shaft mounted within said stack, a rodmounted above said shaft and centrally of said stack, said rod carryingon its upper end a screen member adapted to seat over the outlet of saidstack, a secondscreen member slidably' mounted on said rod and disposedinteriorly of the stack, said second screen member being complemental tothe first, connecting means between said screen members and a shaft forsimultaneously bringing said screen members to their closed or openposition and means connected to said shaft whereby the same may berotated to bring the screen members to their closed and open positions,

said means being controllable from a remote point.

9. In a device of the character described,

including in combination a stack, a pair of super-imposed screensforming a closure therefor, a central rod with which one screen issecured and the other-shdably mounted,

a connecting means with said rod and last named screen whereby thescreens may be separated or returned to their original positions.

' V 10; In a spark arrester including" amain stack, a rod mountedcentrally of said stack,

a pair of screen members mounted on said rod, one exteriorly andthe'other interlorly in combination a stack,:a screen member; over theoutlet of said stack,: peripheral guides therefor to permit reciprocalmove ment of said screen, a rod depending from said screen, a secondscreen complemental to the first named screen slidably mounted on saidrod, a. connecting means with the rod 7 and lower screen whereby thescreens may be reciprocated in opposite. directions with respect to eachother. I

In testimonywhereof I have hereunto set my hand in'the presence of twosubscribing witnesses.

7 ALBERT D. JONES. Witnesses:

' O. C. LANDRITH,

E. D. BALDWIN.

